Deep-well pump



May 20 1924. 1,494,664

J. N. CASTLE DEEP WELL PUMP Filed July 21, 1921 2 Sheets-Sheet 1 A TTORNEYIZ May .0 1924,

DEEP WELL PUMP Filed July 21, 1921 2 Sheets-Sheet 3 INVENTOR.

BY v v Q I g ATTORN Patented May 20, 1924.

srarss JOHN CASTLE, F FELLOWS, CALIFORNIA.

DEEP-1L PUMP.

Application flied :l'uly 21, 1921. Serial Ito. 486,822.

well pumps, and more particularly to means.

associated with-and forming a part of the pump rod reciprocating means for imparting intermittent rotary movement to said pump rod simultaneously .with its vertical movement so as to efiect an even distribution. of the wear between the pump, rod and its bearings and between the pump cylinderand piston.

Further objects of my invention are to provide a flexible connection between the zo'pump rod and the walking beam of the pump actuatingmeans, and to arrange said flexible connections so that they Wlll act automatically in imparting to the pump rod simultaneously with its vertical movement 26 the desired intermittent rotary movement.

"With the foregoing and other objects in view, my invention consists in certain novel features of construction and arrangement of parts that will be hereinafter more fully 30 described and claimed and illustrated in the accompanying drawings, in which:

Figure 1 is an elevational view of a deep well pump head or operating mechanism, and showing the same equipped with my 36 improved device.

Fig. 2 is an elevational view of a part of the pump operating mechanism with my improved device applied thereto, and show ing said device in the position it assumes 40 when the pump rod is at its lower limit of movement.

Fig. 3 is an'elevational view showing the device associated with the pump operating mechanism, and in the position it assumes when the pump rod is at its upper limit of movement.

Fig. 4 is an enlarged cross section taken ap roximately on the line 4-4 of Fig. 2.

eferring by numerals to the accompanyin drawings which illustrate a practical em odiment of my invention, 10 designates the walking beam of a deep well pumping apparatus, and which walking beam is operated from a bull wheel 11, through a crank 12 and connecting rod 13, said bull wheel being driven in any suitable manner, preferably by means of a motor 1t. The numeral 15 designates the well casing that is provided at its upper end with a suitable stufiin box 16, and operating therethrough is t e usual pump rod 17. Where my improved attachment is utilized, collars such as 18 and 19 are fixed in any suitable manner upon the upper portion of the pump rod 17 and which collars are suitably spaced apart.

"Loosely arranged upon the pump rod 17 beneath the upper collar 19 is a cross bar 1 20, and secured to the ends thereof in any suitable manner are the lower ends of a wire rope or cable 21, the doubled central por tion of which bears directly upon the walking' beam 10 adjacent to its outer end. Loosely arranged upon pump rod 17 beneath collar 18 is a cross bar 22, and connected' to the end portions thereof in any suitable manner arethe lower ends of a wire rope or cable 23, a doubled central portion of which bears directly on top or the walking beam 10 at a point a short distance away from the point of bearing of the shorter cable 21.

Before securing the ends of. the cables 21 and 23 to the cross bars 20 and 22, said cables are over twisted, that is they are twisted to a greater degree than the twist that is imparted to them in their manufacture so that when properly secured to aid Crossbars and ositioned over the end portion of the walking beam, their normal tend may is to untwist. Further, the upper portions of the two cables are spaced apart, so that when the walking beam is in an intermediate or horizontally dis osed position, as illustrated in Fig. 1, the earing points of Said cables upon said walking beam are disposed at equal distances away from a point that is in direct vertical alinement with the axis of the pump rod 17. By virtue of this arrangement the upper portion of the shorter cable 21 traverses an arc of greater radius than the arc traversed by the upper end of the longer cable 23.

Immediately after the walking beam 10 reaches an intermediate or horizontal posi tion on the downward stroke of the pum rod and as it continues its downward pgmp rod and travel, the weight of said parts carried t ereby will transferred no from cross bar 20 to cross bar 22, thereby relieving cable 21 of pullin strains, and as a result of the tendency 0 said cable to untwist, it will swing the cross bar 20 to which it is connected into an angular position with respect to the cross bar 22, and as the u per end of said cable 21 or the part that bears upon walking beam 10 moves below the horizontal plane occupied b the axis of said beam; it will move inward y toward the vertical plane occupied, by said axis so that the parts of said cable 21 occupy relatively slight angular positions immediately adjacent to a line drawn through the axis of the pump rod 17, and as a result of such conditions the cross bar 20. vto which the cable 21 is connected, will move downwardly a short distance away from collar 19 thereby taking the position as illustrated in Fig. 2. During the latter half of the downward stroke of the pump rod 17, the weight thereof is carried by the longer cable 23, and while such condition exists the tendency of the lower ends of said cable to swing backward to their normal positions will. as a result of the frictional engagement between the upper Surface of cross bar 22 and the under surface of collar 18, impartv sli ht rotary movement to the pump rod 17 an parts carried thereby. and such untwisting action of cable 23 will swing cross bar 22 into an angular position with respect to cross bar 20.

At the end of the upward stroke of pump rod 17 the parts will occupy the positions as illustrated in Fig. 3, and with the bearing point. of cable'23 on walking beam 10 relatively close to the vertical plane occupied by the axis of said walking beam, and by virtue of this increased angular position of said cable 23 with respect to the axis of pump rod 17, the cross bar 22 is permitted to move downwardly a slight distance away from the under side of collar 18. During the latter half of the upward stroke of the pump rod, cable-21 and cross bar 20 are carrying the weight of said pump rod, and as a result of the frictional engagement between the upper surface of cross bar 20 and collar 18 the torsional strains of cable 21 upon cross bar 20 will impart slight rotary movement to the pump rod and which movement is in the same direction as the rotary movement imparted by cable 23 and cross bar 22.

' Thus a step by step'or intermittent rotary movement is imparted to pump' rod 17 and parts carried thereby,- and as a result of such action the wear between said rod and parts having bearing therewith will be evenly distributed, and said rods and parts will have much longer life than where they are arranged to reciprocate without simultaneous rotary motion. 7

It will be understood that the pump rod 17 must necessarily be rotated clockwise or toward the right hand, for if it were rotated in the opposite direction, it would be unscrewed from the pump piston, therefore the abnormal twist imparted to the cables before they are applied for use must be of such a nature as to impart right hand rotary motion to the pump rod. Thus if right hand laid cable 1s utilized, the same must be over twisted, but if left hand laid cable is utilized, then the same must be untwisted so as to impart thereto a tendency to twist back to its normal condition and consequently imparting the proper rotary motion to the pump rod.

In order to maintain the cables in their abnormally twisted conditions. it is essential that their ends-be rigidly'secured to the cross bars 20 and 22, and this may be done in any suitable manner, but preferably with,

means as illustrated in Fig. 4, and which includes threaded thimbles that are secured to the ends of the cable and which pass through theends of the cross bars and are secured thereto by nuts.

A deep well pump operating mechanism of my improved construction is relatively simple, may be easily and cheaply produced, and is very effective in performing its intended functions.

It will be readily understood that minor changes in size, form and construction of the various parts of my improved deep well pump operating mechanism may be made and substituted for those herein shown and described without departing from the spirit of my invention, the scope of which is set forth inthe appended claims.

I claim as my invention:

l. The combination with a pump rod, of means for imparting reciprocatory movement thereto, and means forming a connection between said pump rod and reciproeatory imparting means for imparting rotary movement to said pump rod in the same direction during every change of direction in the reciprocating movement of the pump rod. I

2. In combination, a pump rod, a walk ing beam, and flexible connections of different lengths twisted and looped over the walking beam, said connections being connected to the pump rod in such manner as to impart rotary movement to-the pump rod simultaneous with the reciprocatory movement thereof.

3. In a deep well pump, thecombination with a pump rod and walking beam, of spaced abutments on said pump rod, cross bars loosely arranged on the pump rod beneath said abutments', and flexible connections between said cross bars and said walking beam.

'4. In a deep well pump, the combination with a pump rod and walking beam, of

flexible members connected to said walking beam at spaced points, and flexibly connected to said pump rod at spaced points thereon.

5. In a deep well pump, the combination with a pump rod and walking beam, of cross bars loosely arranged on said pump rod at spaced points, and cables connected to said cross bars and engaging at spaced points upon said walking beam. 7

6. In a deep well pump, the combination with a pump rod and a walking beam of spaced abutments on said pump rod, cross bars loosely arranged on the pump rod beneath said abutments, and a cable connecting each cross bar with said walking beam, one of which cables is twisted to an abnormal de ree.

7. In a :deep well pump, the combination with a pump rod and a walking beam, of spaced abutments on said pump rod, cross bars loosely arranged on sa1d pump rod beneath said abutments, an abnormally twisted cable connecting the ends of each cross bar with said walking beam and the bearing oints of said cables upon said walking beam being spaced apart.

' 8. The combination with a pump rod and its reciprocating means, of means forming a connection between said pump rod and said reciprocating means for imparting intermittent rotary movement to said pump rod simultaneous with its reciprocatory movement, and which connecting means includes cables having different degrees of twist. i

9. The combination with a pump rod and a walking beam, of cross bars rotatablyarranged on said pump rod, and flexible connections betweensaid cross bars and said walking beam.

10. The combination with a pump rod and a walking beam, of means including a pair of flexible members movably connected to the pump rod and looped over the walking beam' so as to impart intermittent rotary movement to said pump rod simultaneously with its reciprocating movement.

11..The combination with a pump rod and a reciprocating member, of a pair of flexible members of different lengths forming a connection between the pump rod and reciprocating member and adapted to impart intermittent rotary movement to said pump rod.

12. The combination with a pump rod and a walking beam, of cross bars rotatably arranged on said pump rod, and flexible connections between, said cross bars and said walking beam, said connections being twisted different degrees for the purpose described.

In testimony whereof I have signed my name to this specification.

JOHN N. CASTLE. 

